ART. 10 GALL-INHABITING CYNIPID WASPS WELD 25 



Habitat. — Galls were collected and living adults cut out on Novem- 

 ber 1, 1921, at Tijeras, N. Mex. The galls were also seen farther 

 south in the Sandia Mountains at Abo Pass and in Blue Canyon 

 near Socorro and at Hillsboro. 



DIPLOLEPIS DISCULARIS, new species 



Female. — ^Black, base of antenna and legs beyond coxae brownish, 

 face and mesonotum with scattered appressed white pubescence. 

 Head coriaceous; from above as broad as thorax, not broadened be- 

 hind eyes, occiput not concave; from in front nearly circular in out- 

 line, facial quadrangle slightly broader than high, malar space 

 about one-third eye without groove, antenna 14-segmented, lengths 

 as (scape) 10 : 6 : 13 : 10 : 9 : 8 : 8 : 7.5 : T : 7 : 6.5 : 6 : 6 : 8. Sides of prono- 

 tum with fine parallel ridges near tegulae. Mesoscutum high-arched, 

 longer than broad, finely coriaceous with setigerous punctures, parap- 

 sidal grooves deep, smooth, percurrent, a short median line visible 

 posteriorly. Disk of scutellum rugose behind, smoother above, its 

 sides bounded by two straight diverging lines, the two large round 

 smooth pits at base opening on to disk behind. Carinae on propo- 

 deum strongly arcuate, enclosed area narrower above, neck rugose. 

 Mesopleura shining, smooth except for aciculate area in front. Tar- 

 sal claws with a strong tooth. Hind tarsus 2 as long as 5 (without 

 claw). Wing hyaline, pubescent, and ciliate, veins brown, first 

 abscissa of radius arcuate, one-ninth length of second, areolet reach- 

 ing one-eighth way to basal, cubitus indistinct. Abdomen shining, 

 longer than head and thorax, length to height to width as 75 : 66 : 35, 

 length of tergites along dorsal curvature as 58:15:9:5:6:5, second 

 with sparsely pubescent areas at base and hind margin at angle of 

 about 45°, ventral spine slender, in side view eight times as long as 

 broad. Using width of head as a base the length of mesonotum ratio 

 is 1.5, antenna 3.0, wing 5.7, ovipositor 4.2, Length, 1.6-1.95 mm. 

 Average of 6 specimens, 1.86 mm. 



Type.—C2it. No. 27191, U.S.N.M. Type and 2 paratypes. Para- 

 types at Field and Stanford. 



Host. — Querents gaf^ryema. 



Gall (fig. 34). — Disk-shaped, about 6 mm. in diameter by 1 mm. 

 thick, single or scattered in small numbers on underside of leaf in 

 fall. The upper surface is slightly concave, the edge sinuate, the 

 margin reflexed nearly to the leaf surface. The transversely placed 

 larval cell occupies the full height of the gall. Exit hole above. 



Habitat. — The type material was collected September 8, 1922, in 

 Sequoia National Park, Calif., near the Cedar Creek checking sta- 

 tion on the road to Giant Forest on the Kaweah form of this Oregon 

 oak. Living flies were cut out of the galls on November 10, 



